參數(shù)資料
型號： MC34167TH
廠商： MOTOROLA INC
元件分類： 穩(wěn)壓器
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 8 A SWITCHING REGULATOR, 81 kHz SWITCHING FREQ-MAX, PSFM5
封裝： HORIZONTAL MOUNT, PLASTIC, TO-220, 5 PIN
文件頁數(shù)： 2/16頁
文件大?。?/td> 408K
代理商： MC34167TH
MC34167 MC33167
2
MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Input Voltage
VCC
40
V
Switch Output Voltage Range
VO(switch)
VFB, VComp
–2.0 to + Vin
–1.0 to + 7.0
V
Voltage Feedback and Compensation Input
Voltage Range
V
Power Dissipation
Case 314A, 314B and 314D (TA = +25
°
C)
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 936A (D2PAK) (TA = +25
°
C)
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
PD
θ
JA
θ
JC
PD
θ
JA
θ
JC
TJ
TA
Internally Limited
65
5.0
Internally Limited
70
5.0
W
°
C/W
°
C/W
W
°
C/W
°
C/W
°
C
°
C
Operating Junction Temperature
+150
Operating Ambient Temperature (Note 3)
MC34167
MC33167
0 to + 70
– 40 to + 85
Storage Temperature Range
Tstg
– 65 to +150
°
C
ELECTRICAL CHARACTERISTICS
(VCC = 12 V, for typical values TA = +25
°
C, for min/max values TA is the operating ambient
temperature range that applies [Notes 2, 3], unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Frequency (VCC = 7.5 V to 40 V)
TA = +25
°
C
TA = Tlow to Thigh
fOSC
65
62
72
–
79
81
kHz
ERROR AMPLIFIER
Voltage Feedback Input Threshold
TA =+ 25
°
C
TA = Tlow to Thigh
VFB(th)
4.95
4.85
5.05
–
5.15
5.20
V
Line Regulation (VCC = 7.5 V to 40 V, TA = +25
°
C)
Input Bias Current (VFB = VFB(th) + 0.15 V)
Power Supply Rejection Ratio (VCC = 10 V to 20 V, f = 120 Hz)
Output Voltage Swing
High State (ISource = 75
μ
A, VFB = 4.5 V)
Low State (ISink = 0.4 mA, VFB = 5.5 V)
Regline
IIB
PSRR
–
0.03
0.078
%/V
–
0.15
1.0
μ
A
60
80
–
dB
VOH
VOL
4.2
–
4.9
1.6
–
1.9
V
PWM COMPARATOR
Duty Cycle (VCC = 20 V)
Maximum (VFB = 0 V)
Minimum (VComp = 1.9 V)
DC(max)
DC(min)
92
0
95
0
100
0
%
SWITCH OUTPUT
Output Voltage Source Saturation (VCC = 7.5 V, ISource = 5.0 A)
Off–State Leakage (VCC = 40 V, Pin 2 = Gnd)
Current Limit Threshold (VCC = 7.5 V)
Switching Times (VCC = 40 V, Ipk = 5.0 A, L = 225
μ
H, TA = +25
°
C)
Output Voltage Rise Time
Output Voltage Fall Time
Vsat
Isw(off)
Ipk(switch)
–
(VCC –1.5)
0
(VCC –1.8)
100
V
–
μ
A
5.5
6.5
8.0
A
tr
tf
–
–
100
50
200
100
ns
UNDERVOLTAGE LOCKOUT
Startup Threshold (VCC Increasing, TA = +25
°
C)
Hysteresis (VCC Decreasing, TA = +25
°
C)
TOTAL DEVICE
Power Supply Current (TA = +25
°
C )
Standby (VCC = 12 V, VComp < 0.15 V)
Operating (VCC = 40 V, Pin 1 = Gnd for maximum duty cycle)
Vth(UVLO)
VH(UVLO)
5.5
5.9
6.3
V
0.6
0.9
1.2
V
ICC
–
–
36
40
100
60
μ
A
mA
NOTES:
1.Maximum package power dissipation limits must be observed to prevent thermal shutdown activation.
2.Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
3.T
low
= 0
°
C for MC34167
T
high
= + 70
°
C for MC34167
= – 40
°
C for MC33167
= + 85
°
C for MC33167
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